X-Git-Url: http://git.nikiroo.be/?a=blobdiff_plain;f=src%2Fjexer%2Fnet%2FTelnetOutputStream.java;h=6e7536a847f3bcb5e9a68b2c90f38026f2ed2694;hb=738dd8c426dcc6ed2508d68b7985f68d66549889;hp=98727277a8b47e6a5397d3ac3e77e131424edce8;hpb=005ec49709aab8590ee9571f17a67440969c6248;p=fanfix.git diff --git a/src/jexer/net/TelnetOutputStream.java b/src/jexer/net/TelnetOutputStream.java deleted file mode 100644 index 9872727..0000000 --- a/src/jexer/net/TelnetOutputStream.java +++ /dev/null @@ -1,217 +0,0 @@ -/** - * Jexer - Java Text User Interface - * - * License: LGPLv3 or later - * - * This module is licensed under the GNU Lesser General Public License - * Version 3. Please see the file "COPYING" in this directory for more - * information about the GNU Lesser General Public License Version 3. - * - * Copyright (C) 2015 Kevin Lamonte - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public License - * as published by the Free Software Foundation; either version 3 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, see - * http://www.gnu.org/licenses/, or write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - * - * @author Kevin Lamonte [kevin.lamonte@gmail.com] - * @version 1 - */ -package jexer.net; - -import java.io.OutputStream; -import java.io.IOException; - -/** - * TelnetOutputStream works with TelnetSocket to perform the telnet protocol. - */ -public final class TelnetOutputStream extends OutputStream { - - /** - * The root TelnetSocket that has my telnet protocol state. - */ - private TelnetSocket master; - - /** - * The raw socket's OutputStream. - */ - private OutputStream output; - - /** - * Package private constructor. - * - * @param master the master TelnetSocket - * @param output the underlying socket's OutputStream - */ - TelnetOutputStream(TelnetSocket master, OutputStream output) { - this.master = master; - this.output = output; - } - - // OutputStream interface ------------------------------------------------- - - /** - * Closes this output stream and releases any system resources associated - * with this stream. - */ - @Override - public void close() throws IOException { - if (output != null) { - output.close(); - output = null; - } - } - - /** - * Flushes this output stream and forces any buffered output bytes to be - * written out. - */ - @Override - public void flush() throws IOException { - if ((master.nvt.binaryMode == false) && (master.nvt.writeCR == true)) { - // The last byte sent to this.write() was a CR, which was never - // actually sent. So send the CR in ascii mode, then flush. - // CR -> CR NULL - output.write(master.C_CR); - output.write(master.C_NUL); - master.nvt.writeCR = false; - } - output.flush(); - } - - /** - * Writes b.length bytes from the specified byte array to this output - * stream. - */ - @Override - public void write(byte[] b) throws IOException { - writeImpl(b, 0, b.length); - } - - /** - * Writes len bytes from the specified byte array starting at offset off - * to this output stream. - */ - @Override - public void write(byte[] b, int off, int len) throws IOException { - writeImpl(b, off, len); - } - - /** - * Writes the specified byte to this output stream. - */ - @Override - public void write(int b) throws IOException { - byte [] bytes = new byte[1]; - bytes[0] = (byte)b; - writeImpl(bytes, 0, 1); - } - - /** - * Writes b.length bytes from the specified byte array to this output - * stream. Note package private access. - */ - void rawWrite(byte[] b) throws IOException { - output.write(b, 0, b.length); - } - - /** - * Writes len bytes from the specified byte array starting at offset off - * to this output stream. - */ - private void writeImpl(final byte[] b, final int off, - final int len) throws IOException { - - byte [] writeBuffer = new byte[Math.max(len, 4)]; - int writeBufferI = 0; - - for (int i = 0; i < len; i++) { - if (writeBufferI >= writeBuffer.length - 4) { - // Flush what we have generated so far and reset the buffer, - // because the next byte could generate up to 4 output bytes - // (CR ). - super.write(writeBuffer, 0, writeBufferI); - writeBufferI = 0; - } - - // Pull the next byte - byte ch = b[i + off]; - - if (master.nvt.binaryMode == true) { - - if (ch == master.TELNET_IAC) { - // IAC -> IAC IAC - writeBuffer[writeBufferI++] = (byte)master.TELNET_IAC; - writeBuffer[writeBufferI++] = (byte)master.TELNET_IAC; - } else { - // Anything else -> just send - writeBuffer[writeBufferI++] = ch; - } - continue; - } - - // Non-binary mode: more complicated. We use writeCR to handle - // the case that the last byte of b was a CR. - - // Bare carriage return -> CR NUL - if (ch == master.C_CR) { - if (master.nvt.writeCR == true) { - // Flush the previous CR to the stream. - // CR -> CR NULL - writeBuffer[writeBufferI++] = (byte)master.C_CR; - writeBuffer[writeBufferI++] = (byte)master.C_NUL; - } - master.nvt.writeCR = true; - } else if (ch == master.C_LF) { - if (master.nvt.writeCR == true) { - // CR LF -> CR LF - writeBuffer[writeBufferI++] = (byte)master.C_CR; - writeBuffer[writeBufferI++] = (byte)master.C_LF; - master.nvt.writeCR = false; - } else { - // Bare LF -> LF - writeBuffer[writeBufferI++] = ch; - } - } else if (ch == master.TELNET_IAC) { - if (master.nvt.writeCR == true) { - // CR -> CR NULL - writeBuffer[writeBufferI++] = (byte)master.C_CR; - writeBuffer[writeBufferI++] = (byte)master.C_NUL; - master.nvt.writeCR = false; - } - // IAC -> IAC IAC - writeBuffer[writeBufferI++] = (byte)master.TELNET_IAC; - writeBuffer[writeBufferI++] = (byte)master.TELNET_IAC; - } else { - if (master.nvt.writeCR == true) { - // CR -> CR NULL - writeBuffer[writeBufferI++] = (byte)master.C_CR; - writeBuffer[writeBufferI++] = (byte)master.C_NUL; - master.nvt.writeCR = false; - } else { - // Normal character */ - writeBuffer[writeBufferI++] = ch; - } - } - - } // while (i < userbuf.length) - - if (writeBufferI > 0) { - // Flush what we have generated so far and reset the buffer. - super.write(writeBuffer, 0, writeBufferI); - } - } - - -}